Free Math Worksheets and Activities Grade 9 - IntoMath Free Grade 9 Math Worksheets. Area and perimeter circle square triangle worksheet. BEDMAS Math Worksheet. Linear Relations Trick or Treat. One and Two Step Linear Equations Math Game Worksheet. Operations with Fractions Worksheet. Percent, Metric Conversions, Area Sahara Desert. Rational Expressions Worksheet. Black Cat Composite Figure Activity.